Periodicities in solar filament activity

Details Periodicities in solar filament activity Periodicities in solar filament activity

Jan 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007acasn..48...29s&link_type=abstract

Acta Astronomica Sinica, vol. 48, no. 1, p. 29-35

Astronomy and Astrophysics

Astronomy

Sun: Chromosphere, Sun: Filaments, Methods: Statistical

Scientific paper

By using the Meudon filament catalogues we reconstruct a daily sequence of filament counts from July 1957 to December 2004 and perform a periodicity analysis with the methods of Scargle periodogram and Morlet wavelet transform. As a result, four prominent periods are found around 1557, 1141, 795 and 367 days. We analyze their temporal variabilities in detail and discuss some typical ones' phases, physical implications and mutual relations briefly.

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